Two periods of possible severe weather  exist.
The first will be late Wednesday night as a warm front moves north through Illinois. Large hail and strong winds will be possible.
The second threat will be Thursday afternoon and evening . Since these storms will be developing during the heat of the afternoon, an additional risk for isolated tornadoes will accompany the hail and wind threat.
Elsewhere across the Corn Belt, cool, rainy weather  has slowed or halted planting activities, but provided beneficial moisture for emerging summer crops.
On the Plains, soil moisture levels  remain mostly favorable for winter wheat and emerging summer crops.
In the South, drier, warmer weather is promoting fieldwork and crop development.
In the West, improved water-supply prospects are found across northern areas.